Home / 388,372,133.37-536,081,267.84-309,132,545.67

Finding the Fourth Proportional to 388,372,133.37, 536,081,267.84 and 309,132,545.67

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Solution

The fourth proportional to 388,372,133.37, 536,081,267.84 and 309,132,545.67 is: 426,704,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,372,133.37 : 536,081,267.84 = 309,132,545.67 : x
  2. Step 2: Convert to fraction form
    388,372,133.37/536,081,267.84 = 309,132,545.67/x
  3. Step 3: Cross multiply
    388,372,133.37x = 536,081,267.84 × 309,132,545.67
  4. Step 4: Simplify right side
    388,372,133.37x = 165,720,167,011,834,656
  5. Step 5: Solve for x
    x = 165,720,167,011,834,656/388,372,133.37
  6. Step 6: Final answer
    x = 426,704,577.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.